, according to his navy records. he was fired by the police department of los angeles four years ago. do we know what triggered four years later this rampage? >> reporter: well, he he brought up charges against an officer saying that this officer kicked a homeless man. it was determined later, according to police reports, that these charges were false by dorner. after a while, he was subsequently fired and he refers to that time and time again in his manifesto as the reason that he would wage a vendetta against officers, wolf. >> do we know what he's been doing for the last four years since he was fired from the lapd? >> reporter: unclear from this side in riverside. >> paul vercammen. thank you. we're going to stay on top of this story during our 6:00 p.m. hour. we're going to speak with chief police moose who was linked to the d.c. sniper. >>> let's move to today's dramatic confrontation up on capitol hill. for a short time today, protesters actually shut down today's hearing for president obama's nominee to run th